MCA Cards

RAM Expansion card - MCA

P/N 90X9369

P/N 90X9369

The XGA Graphics Chip
XGA Display Adapter/A
Wikipedia
Wikipedia on Blitters.
XGA butterfly demo file
XGA demo on YouTube.
Like the 8514, XGA offered fixedfunction hardware acceleration to offload processing of 2D drawing tasks. Both adapters allowed offloading of line-draw, bitmap-copy (BitBlt), and color-fill operations from the host CPU.
I am having problemes makining this card replace the onboard VGA. Higher resolutions work as monitor no. 2. More info here: Cannot get my IBM original MCA XGA card working \ VOGONS

IBM Display Adapter 8514/A
The 8514/A Graphics Accelerator
These VGA Cards have a COPROCESSOR!
The interface allows computer software to offload common 2D-drawing operations (line-draw, color-fill, and block copies via a blitter) onto the 8514 hardware.
The IBM 8514 adapter does not generate VGA. It does generate 1024 x 768 at 43.5 Hz, interlaced, and that's all. Its an accelerator card thats accelerate and gives a new 1024x768 resolution. The memory on the card is only for the new resolution. Your existing VGA card will not have access to the extra video memory.
The 8514/A card simply provides a high resolution of 1024 x 768 with 16 or 256 colors.
When the system is running applications in VGA mode (or lesser resolutions) the 8514/A card simply passes the VGA information from the motherboard VGA controller through the Auxiliary Video Extension (AVE). When applications require high resolution, a TSR program called HDILOAD (provided with the adapter) installs the 8514/A Adapter Interface (AI) code.
More info and a demo disk for th1 8514/A

+ Same as above
Unlike later pass-through solutions used by video decoder or 3D accelerator boards (notably the 3Dfx Voodoo line), the 8514/A did not use an analog pass-through. The PS/2 VGA chips supported a special digital connection which provided digital data before passing it through a palette look-up table (LUT). In pass-through mode, the LUT and DAC of the 8514/A were used, bypassing the on-board VGA ones. To this end, the 8514/A could shadow the VGA palette—writes to the VGA DAC were also directed to the 8514/A DAC, which was fully compatible but supported higher pixel clocks. The 8514/A’s DAC could also be controlled separately without affecting the VGA DAC.
Like other pass-through solutions, this set-up also allowed users to attach two monitors and use the VGA and the 8514/A simultaneously, even if that was not the typical usage scenario. This was a notable difference from nearly all follow-on designs which integrated a VGA core with an accelerator on a single chip (or at least a single board).

CN200E/2

16-bit Ethernet" LAN card compatible with Novell" NE/2 software.
Jumper settings